About Cloudflare Registrar
Cloudflare, known for its CDN and DNS services, is also an accredited registrar. Domains registered or transferred to Cloudflare Registrar show Cloudflare, Inc. as registrar and use Cloudflare nameservers.
What the record looks like
A gTLD WHOIS answer carries the two "Registrar" lines below; RDAP carries the same facts as an entity with the role "registrar" and a public ID of type "IANA Registrar ID". The domain here is a reserved example; the registrar lines read "Cloudflare, Inc." and 1910.
Domain Name: EXAMPLE.COM
Registrar: Cloudflare, Inc.
Registrar IANA ID: 1910
Domain Status: clientTransferProhibited
RDAP: entity with role "registrar"
vcard fn: Cloudflare, Inc.
publicIds: [{ "type": "IANA Registrar ID", "identifier": "1910" }]Country-code registries do not use IANA IDs and often print a shorter or local form of the registrar name, or a registry-specific handle. Some publish no registrar at all.